About one year ago I started to gather(or collect?) [either word is OK] information about spending one or two years abroad in order to obtain my school leaving qualification in an English-speaking country.
After a couple of weeks I came upon the International Baccalaureate Diploma Programme and got enthusiastic about it, and about your school.
As to the subjects I can say that I have always loved sciences and visual arts. Chemistry, physics and visual arts have been my favourite subjects since I can remember. I like to carry out experiments with my class mates, and in physics and chemistry you learn new and interesting things every day. I also love to draw, paint and design in the visual arts class. In addition, I've taken an interest in history lately, because I think it's important and quite interesting to know what happened in the world before our generation.
Right now I have no specific career aspirations [I think this underlined portion should be removed]. At this stage I'm interested in a wide range of careers, including art and design, management, chemistry or science, and architecture.
In my spare time I like to go out with my friends, or play or train with my two dogs.
A few years ago I took piano and cello lessons and I've been playing the guitar for the last one and a half years, which I really like (or enjoy?)."
The style of this document seems a little casual, and somewhat vague. Is it supposed to be a professional document that's written in a formal style?